This solenoid valve is low temperature design, temperature below 30 degrees , low heat and low noise. 100-240V wide voltage input, DC 12V output, the solenoid valve is upgraded 12V noiseless version. It is safe, no leaking and easy to install, turn on and off automatically when used with a timer, also, timer can connect your aquarium's lighting system, with it, better keep your aquatic plants healthy, more convenient and save energy. Features: Noiseless and Safety: 100-240V wide voltage input, DC 12V output, the solenoid valve is UPGRADED 12V noiseless version. High-quality power cord( the total length of the power cord is 90cm), with "anti-shock" charger, safety and no safety hazards. Settable: Turn on and off automatically when used with a timer. Thanks to this CO2 solenoid valve, timer can connect your aquarium's lighting system and cuts off the CO2 supply depending on light. keeping your aquatic plants healthy, more convenient and save energy. Suitable for: One end connect M10*1 external thread or fine adjustment valve, the other end connect?4*6mm tube or bubble counter(single head solenoid valve). Two ends connect 4*6mm tube or bubble counter(double head solenoid valve). anti-shedding and good sealing. No leaking. Durable and Easy to Control: Be made of aluminum alloy material, strong and sturdy. Low temperature design, temperature below 30 degrees , low heat and low noise. According to user's need to control the outlet time, convenient, stable and easy to install. Specification: Name: Solenoid valve Main color: Silver, black Material: Aluminum alloy Power: 1.6W Voltage: 100V-240V input, 12V stable low voltage output Optional type: Single head/double head Single head: M10*1 external thread or fine adjustment valve/ 4*6mm tube or bubble counter Double head: 4*6mm tube or bubble counter Size: 51*48mm Power cord: 90cm Note: Only suitable for valve's output pressures below 6KG. Trim valve interface(if not the M10*1 interface) can not be connected to the single head, can only buy a double-headed solenoid valve and 4*6mm air tube. If you have a small leak when it's off, pls try flipping the inlet/outlet. When solenoid valve working, the surface temperature is a little high, hot is a normal phenomenon. After connecting well, pls do not touching. Package Information: Package size: 13*8.4*4cm Package weight: Single head: 154g; Double head: 141g Gift Box Packaging Packing List: 1* Solenoid valve 1* Wrench 1* Seal ring 1* Plug